摘要
散射系统中大容量、远距离信息传输的瓶颈可以利用OFDM这一新技术来解决。利用了OFDM这一新技术可以更好地利用了有限频带资源的特点,提出了一个可以明显增加散射通信容量方法。从保护时隙、帧格式、载波数量和定时等方面进行了分析,并且针对散射系统的特点提出了一个可行性方案,并讨论了在散射信道内OFDM的校频问题。经分析,该系统完全能够实现散射的大容量、远距离通信。
The bottleneck of troposcatter system is how to handle with the huge capacity. This paper presents a method to solve the problem by using OFDM technique, because OFDM can make more efficient use of the limited frequency resource. The paper introduces the method from the aspects of guard interval, frame format, number of carriers and timing, presents a feasible scheme aiming to the feature of troposcatter system, and discusses the problem of frequency correction as well. It is proved that this method can fully realize the long distance and huge capacity troposcatter communication.
出处
《无线电工程》
2007年第2期58-60,共3页
Radio Engineering
关键词
分组正交多载波复用
导频
校频
packet-based orthogonal frequency division multiplexing
pilot
frequency correction
